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Mathew Blackman's Stock Ratings
Stifel Analyst
Mathew Blackman is an analyst at Stifel. Analyst ratings are quantitative and qualitative analysis of a stock by Wall Street stock rating analysts. Stock ratings consist of expected future growth, current stock valuation and macroeconomic trends. Updated 12/15/2025
Updated: Dec 15, 2025
Overall Average Return
14.7%
Smart Score
Overall Average Return Percentile
68th
Number of Ratings
71
| Buy Now | Get Alert | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 05/08/2025 | INGN | Buy Now | Inogen | $6.83 | 2.49% | $10 → $7 | Maintains | Hold | Get Alert | |
| 05/01/2025 | TNDM | Buy Now | Tandem Diabetes Care | $21.41 | 44.79% | $60 → $31 | Maintains | Buy | Get Alert | |
| 04/24/2025 | PEN | Buy Now | Penumbra | $309.15 | 2.86% | $301 → $318 | Maintains | Buy | Get Alert | |
| 04/01/2025 | CLPT | Buy Now | ClearPoint Neuro | $13.79 | 81.31% | $19 → $25 | Maintains | Buy | Get Alert | |
| 02/24/2025 | BBNX | Buy Now | Beta Bionics | $29.72 | -15.88% | → $25 | Initiates | → Buy | Get Alert | |
| 02/21/2025 | PODD | Buy Now | Insulet | $291.51 | 0.51% | $245 → $293 | Maintains | Hold | Get Alert | |
| 02/21/2025 | GMED | Buy Now | Globus Medical | $86.50 | 8.67% | $92 → $94 | Maintains | Buy | Get Alert | |
| 11/08/2024 | PODD | Buy Now | Insulet | $291.51 | -15.95% | $185 → $245 | Maintains | Hold | Get Alert | |
| 11/08/2024 | OFIX | Buy Now | Orthofix Medical | $15.71 | 52.77% | $18 → $24 | Upgrade | Hold → Buy | Get Alert | |
| 11/06/2024 | GMED | Buy Now | Globus Medical | $86.50 | 6.36% | $80 → $92 | Maintains | Buy | Get Alert | |
| 10/17/2024 | CERS | Buy Now | Cerus | $2.23 | 34.67% | $6 → $3 | Maintains | Buy | Get Alert | |
| 09/17/2024 | PEN | Buy Now | Penumbra | $309.15 | -23.01% | → $238 | Initiates | → Buy | Get Alert | |
| 09/17/2024 | NARI | Buy Now | Inari Medical | — | — | → $50 | Initiates | → Hold | Get Alert | |
| 08/23/2024 | DXCM | Buy Now | DexCom | $65.73 | 52.14% | $90 → $100 | Maintains | Buy | Get Alert | |
| 08/01/2024 | ATEC | Buy Now | Alphatec Holdings | $19.71 | -18.82% | $19 → $16 | Maintains | Buy | Get Alert | |
| 07/26/2024 | DXCM | Buy Now | DexCom | $65.73 | 36.92% | $132 → $90 | Maintains | Buy | Get Alert | |
| 07/12/2024 | DXCM | Buy Now | DexCom | $65.73 | 100.82% | $145 → $132 | Maintains | Buy | Get Alert | |
| 07/11/2024 | ATEC | Buy Now | Alphatec Holdings | $19.71 | -3.6% | $24 → $19 | Maintains | Buy | Get Alert | |
| 05/29/2024 | TNDM | Buy Now | Tandem Diabetes Care | $21.41 | 180.24% | $55 → $60 | Maintains | Buy | Get Alert | |
| 05/22/2024 | TNDM | Buy Now | Tandem Diabetes Care | $21.41 | 156.89% | $45 → $55 | Maintains | Buy | Get Alert | |
| 05/10/2024 | PODD | Buy Now | Insulet | $291.51 | -36.54% | $208 → $185 | Maintains | Hold | Get Alert | |
| 05/08/2024 | INGN | Buy Now | Inogen | $6.83 | 2.49% | $6 → $7 | Maintains | Hold | Get Alert | |
| 05/08/2024 | GMED | Buy Now | Globus Medical | $86.50 | -19.08% | $64 → $70 | Maintains | Buy | Get Alert | |
| 05/03/2024 | TNDM | Buy Now | Tandem Diabetes Care | $21.41 | 110.18% | $40 → $45 | Maintains | Buy | Get Alert | |
| 04/23/2024 | TNDM | Buy Now | Tandem Diabetes Care | $21.41 | 86.83% | $37 → $40 | Maintains | Buy | Get Alert | |
| 03/26/2024 | TNDM | Buy Now | Tandem Diabetes Care | $21.41 | 72.82% | $24 → $37 | Upgrade | Hold → Buy | Get Alert | |
| 03/13/2024 | CLPT | Buy Now | ClearPoint Neuro | $13.79 | -34.73% | $8 → $9 | Reiterates | Buy → Buy | Get Alert | |
| 02/05/2024 | PODD | Buy Now | Insulet | $291.51 | -28.65% | $163 → $208 | Maintains | Hold | Get Alert | |
| 11/09/2023 | OFIX | Buy Now | Orthofix Medical | $15.71 | -10.88% | $16 → $14 | Maintains | Hold | Get Alert | |
| 11/07/2023 | ATEC | Buy Now | Alphatec Holdings | $19.71 | 21.77% | $25 → $24 | Maintains | Buy | Get Alert | |
| 10/24/2023 | CLPT | Buy Now | ClearPoint Neuro | $13.79 | -41.98% | → $8 | Initiates | → Buy | Get Alert | |
| 10/10/2023 | DXCM | Buy Now | DexCom | $65.73 | 120.6% | $155 → $145 | Maintains | Buy | Get Alert | |
| 09/19/2023 | GMED | Buy Now | Globus Medical | $86.50 | -29.48% | → $61 | Upgrade | Hold → Buy | Get Alert | |
| 09/12/2023 | OFIX | Buy Now | Orthofix Medical | $15.71 | 1.85% | $30 → $16 | Downgrade | Buy → Hold | Get Alert | |
| 08/08/2023 | INGN | Buy Now | Inogen | $6.83 | 17.13% | $15 → $8 | Maintains | Hold | Get Alert | |
| 08/04/2023 | ATEC | Buy Now | Alphatec Holdings | $19.71 | 26.84% | $18 → $25 | Maintains | Buy | Get Alert | |
| 05/10/2023 | AHCO | Buy Now | AdaptHealth | $10.27 | 7.11% | $18 → $11 | Downgrade | Buy → Hold | Get Alert | |
| 04/28/2023 | DXCM | Buy Now | DexCom | $65.73 | 112.99% | $130 → $140 | Maintains | Buy | Get Alert | |
| 04/20/2023 | PODD | Buy Now | Insulet | $291.51 | 17.32% | $300 → $342 | Maintains | Hold | Get Alert | |
| 01/04/2023 | APEN | Buy Now | Apollo Endosurgery | — | — | → $10 | Downgrade | Buy → Hold | Get Alert | |
| 10/07/2022 | DXCM | Buy Now | DexCom | $65.73 | 82.57% | $112 → $120 | Maintains | Buy | Get Alert | |
| 05/09/2022 | INGN | Buy Now | Inogen | $6.83 | 339.24% | $40 → $30 | Maintains | Hold | Get Alert | |
| 03/14/2022 | SPNE | Buy Now | SeaSpine Holdings | — | — | $18 → $16 | Maintains | Buy | Get Alert | |
| 03/04/2022 | OFIX | Buy Now | Orthofix Medical | $15.71 | 186.44% | $41 → $45 | Upgrade | Hold → Buy | Get Alert | |
| 02/23/2022 | APEN | Buy Now | Apollo Endosurgery | — | — | $12 → $10 | Maintains | Buy | Get Alert | |
| 12/09/2021 | APEN | Buy Now | Apollo Endosurgery | — | — | → $12 | Initiates | → Buy | Get Alert | |
| 11/08/2021 | INGN | Buy Now | Inogen | $6.83 | 485.65% | $70 → $40 | Maintains | Hold | Get Alert | |
| 10/28/2020 | DXCM | Buy Now | DexCom | $65.73 | 622.65% | $500 → $475 | Maintains | Buy | Get Alert | |
| 10/20/2020 | OFIX | Buy Now | Orthofix Medical | $15.71 | 148.25% | → $39 | Initiates | → Hold | Get Alert | |
| 10/20/2020 | SPNE | Buy Now | SeaSpine Holdings | — | — | → $22 | Initiates | → Buy | Get Alert | |
| 10/20/2020 | NUVA | Buy Now | NuVasive | — | — | → $64 | Initiates | → Buy | Get Alert | |
| 10/20/2020 | GMED | Buy Now | Globus Medical | $86.50 | -35.26% | → $56 | Initiates | → Hold | Get Alert | |
| 10/20/2020 | ATEC | Buy Now | Alphatec Holdings | $19.71 | -34.04% | → $13 | Initiates | → Buy | Get Alert | |
| 08/26/2020 | WMGI | Buy Now | Wright Medical Group | — | — | → $30 | Downgrade | Buy → Hold | Get Alert | |
| 07/29/2020 | DXCM | Buy Now | DexCom | $65.73 | 660.69% | $385 → $500 | Maintains | Buy | Get Alert | |
| 05/27/2020 | AHCO | Buy Now | AdaptHealth | $10.27 | 94.74% | $18 → $20 | Maintains | Buy | Get Alert | |
| 04/29/2020 | DXCM | Buy Now | DexCom | $65.73 | 485.73% | $270 → $385 | Maintains | Buy | Get Alert | |
| 02/26/2020 | AHCO | Buy Now | AdaptHealth | $10.27 | 75.27% | $17 → $18 | Maintains | Buy | Get Alert | |
| 01/31/2020 | AHCO | Buy Now | AdaptHealth | $10.27 | 65.53% | → $17 | Initiates | → Buy | Get Alert | |
| 11/07/2019 | DXCM | Buy Now | DexCom | $65.73 | 204.28% | $190 → $200 | Maintains | Buy | Get Alert | |
| 10/23/2019 | DXCM | Buy Now | DexCom | $65.73 | 189.06% | → $190 | Initiates | → Buy | Get Alert | |
| 08/08/2019 | INGN | Buy Now | Inogen | $6.83 | 602.78% | $85 → $48 | Downgrade | Buy → Hold | Get Alert | |
| 05/08/2019 | INGN | Buy Now | Inogen | $6.83 | 1144.51% | $160 → $85 | Maintains | Buy | Get Alert | |
| 08/22/2018 | INGN | Buy Now | Inogen | $6.83 | 3677.45% | → $258 | Reinstates | → Buy | Get Alert | |
| 08/22/2018 | WMGI | Buy Now | Wright Medical Group | — | — | → $34 | Initiates | → Buy | Get Alert | |
| 08/05/2016 | INGN | Buy Now | Inogen | $6.83 | — | — | Downgrade | Buy → Hold | Get Alert | |
| 09/22/2015 | INGN | Buy Now | Inogen | $6.83 | 895.61% | $48 → $68 | Maintains | Buy | Get Alert | |
| 08/12/2015 | INGN | Buy Now | Inogen | $6.83 | 602.78% | $45 → $48 | Maintains | Buy | Get Alert | |
| 03/11/2015 | INGN | Buy Now | Inogen | $6.83 | 558.86% | → $45 | Upgrade | Hold → Buy | Get Alert | |
| 03/11/2014 | INGN | Buy Now | Inogen | $6.83 | — | — | Initiates | → Hold | Get Alert | |
| 11/26/2013 | WMGI | Buy Now | Wright Medical Group | — | — | $29 → $30 | Maintains | Hold | Get Alert |
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